Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$84.4M |
| 3 |
NVIDIA
NVDA
|
$76.9M |
| 4 |
TSMC
TSM
|
$74.9M |
| 5 |
Amazon
AMZN
|
$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$73.7M |
| 3 |
Alibaba
BABA
|
$49M |
| 4 |
Advanced Micro Devices
AMD
|
$48.1M |
| 5 |
Uber
UBER
|
$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
Harley-Davidson
HOG
$3.67B
| $2.55M | ﹤0.01% |
101,151
+49,864
| +97% | +$1.26M |
|
177
Recursion Pharmaceuticals
RXRX
$2.01B
| $2.54M | ﹤0.01% |
481,048
+217,676
| +83% | +$1.15M |
|
178
Five Below
FIVE
$8.46B
| $2.54M | ﹤0.01% |
+33,882
| New | +$2.54M |
|
179
ProShares Bitcoin Strategy ETF
BITO
$2.63B
| $2.54M | ﹤0.01% |
+138,514
| New | +$2.54M |
|
180
PennyMac Financial
PFSI
$6.08B
| $2.54M | ﹤0.01% |
25,331
+22,915
| +948% | +$2.29M |
|
|
EH
181
EHang Holdings
EH
$1.16B
| $2.51M | ﹤0.01% |
120,199
-61,660
| -34% | -$1.29M |
|
182
YieldMax MSTR Option Income Strategy ETF
MSTY
$4.7B
| $2.5M | ﹤0.01% |
122,809
+21,086
| +21% | +$429K |
|
183
GXO Logistics
GXO
$6.02B
| $2.43M | ﹤0.01% |
+62,268
| New | +$2.43M |
|
|
BECN
184
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $2.4M | ﹤0.01% |
19,430
+18,194
| +1,472% | +$2.25M |
|
185
e.l.f. Beauty
ELF
$7.6B
| $2.38M | ﹤0.01% |
+37,840
| New | +$2.38M |
|
186
Charter Communications
CHTR
$35.7B
| $2.32M | ﹤0.01% |
6,291
+5,953
| +1,761% | +$2.19M |
|
187
Becton Dickinson
BDX
$55.1B
| $2.31M | ﹤0.01% |
+10,094
| New | +$2.31M |
|
188
DexCom
DXCM
$31.6B
| $2.31M | ﹤0.01% |
33,813
-22,874
| -40% | -$1.56M |
|
189
Matador Resources
MTDR
$6.01B
| $2.31M | ﹤0.01% |
45,192
+45,100
| +49,022% | +$2.3M |
|
190
C3.ai
AI
$2.15B
| $2.26M | ﹤0.01% |
107,543
+17,632
| +20% | +$371K |
|
191
ProShares UltraPro S&P 500
UPRO
$4.49B
| $2.26M | ﹤0.01% |
30,560
-31,322
| -51% | -$2.31M |
|
192
Fastenal
FAST
$55.1B
| $2.25M | ﹤0.01% |
+58,012
| New | +$2.25M |
|
193
Emcor
EME
$28B
| $2.25M | ﹤0.01% |
+6,080
| New | +$2.25M |
|
194
Halliburton
HAL
$18.8B
| $2.24M | ﹤0.01% |
88,479
-73,491
| -45% | -$1.86M |
|
195
Colgate-Palmolive
CL
$68.8B
| $2.24M | ﹤0.01% |
+23,884
| New | +$2.24M |
|
196
iShares MSCI Brazil ETF
EWZ
$5.47B
| $2.23M | ﹤0.01% |
86,347
-227,352
| -72% | -$5.88M |
|
197
Bloom Energy
BE
$13.4B
| $2.23M | ﹤0.01% |
113,180
-112,721
| -50% | -$2.22M |
|
198
OneMain Financial
OMF
$7.31B
| $2.21M | ﹤0.01% |
45,130
+37,233
| +471% | +$1.82M |
|
199
Waste Connections
WCN
$46.1B
| $2.2M | ﹤0.01% |
11,261
-1,576
| -12% | -$308K |
|
200
DraftKings
DKNG
$23.1B
| $2.17M | ﹤0.01% |
+65,235
| New | +$2.17M |
|